renovate/lib/workers/global/config/parse/coersions.ts

import { isNonEmptyString } from '@sindresorhus/is';
import JSON5 from 'json5';
import { regEx } from '../../../../util/regex.ts';

export const coersions: Record<string, (arg: string) => unknown> = {
  boolean: (val: string): boolean => {
    if (val === 'true' || val === '') {
      return true;
    }
    if (val === 'false') {
      return false;
    }
    throw new Error(
      `Invalid boolean value: expected 'true' or 'false', but got '${val}'`,
    );
  },
  array: (val: string): string[] => {
    if (val === '') {
      return [];
    }
    try {
      return JSON5.parse(val);
    } catch {
      return val
        .split(',')
        .map((el) => el.trim())
        .filter(isNonEmptyString);
    }
  },
  object: (val: string): any => {
    if (val === '') {
      return {};
    }
    try {
      return JSON5.parse(val);
    } catch {
      throw new Error(`Invalid JSON value: '${val}'`);
    }
  },
  string: (val: string): string => val.replace(regEx(/\\n/g), '\n'),
  integer: parseInt,
};